/Engine/Source/Runtime/Engine/Classes/Kismet/KismetRenderingLibrary.h
Copies the contents of a render target to aUTexture2DOnly works in the editor
static void ConvertRenderTargetToTexture2DEditorOnly ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * WorldContextObject, [UTextureRenderTarget2D](API\Runtime\Engine\Engine\UTextureRenderTarget2D) * RenderTarget, [UTexture2D](API\Runtime\Engine\Engine\UTexture2D) * Texture )